Methods and apparatus for detecting gantry interference in a com

Details Methods and apparatus for detecting gantry interference in a com Methods and apparatus for detecting gantry interference in a com

1996-12-31

1998-09-08

Porta, David P.

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

378 8, 378 95, 378117, H05G 154

Patent

active

058056580

ABSTRACT:
The present invention, in one embodiment, is an interference detection assembly for detecting patient and patient table interference with a gantry of a computed tomography system. The assembly, in one form, includes a frusto-conical capacitive plate secured to a leading frusto-conical surface of the gantry bore. The capacitive plate is coupled to a control unit which detects changes in the capacitance of the capacitive plate. When the plate is discharged below a threshold charge, the control unit generates a signal which may be used to automatically interrupt a scan.

REFERENCES:
patent: 5097495 (1992-03-01), Gray et al.
patent: 5105455 (1992-04-01), Kato et al.
patent: 5651044 (1997-07-01), Klotz, Jr. et al.

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